A. It is in relatively new condition and of a certain quality. B. It is made of materials that are relatively durable and practical. C. It can filter fine dust with a diameter of 0.3 microns and above, and can effectively filter pollutants such as pet hair, dust, and dander. There is little to no exhaust gas emission and minimal secondary pollution. D. It can prevent dust and reduce the impact of dust on the sensitive parts of the machine. E. As part of regular maintenance, it can be easily disassembled and replaced. F. The spare filter can be washed and used again. G. It is easy to install. It is recommended to replace the filter kit every 2 - 3 months, which may make your vacuum cleaner more efficient and potentially extend its service life. H. Color: Black and white. I. Material: Plastic. J. Dimensions: 7×7×9.8 cm. K. Package contents: 3 filters. L. Only the above package contents are included, and other items are not included. M. Note: Light reflection and different displays may cause the color of the item to vary slightly from the actual one. The allowable measurement error is plus or minus 1 - 3 cm.